PURPOSE: To continue energy-saving drive by accumulating a centrifugal force in balance and continuing a driving motion smoothly by a total multiplier effect under the condition that a rotating flywheel three bodies are levitated in a levitating device.

CONSTITUTION: A levitating device 2 is formed in a rectangular shape, its near upper center area is hollowed in semi-annual shape, and a permanent magnet 8 is arranged in its semi-annular shape with its N pole faced toward front side. Also a flywheel 3 is made up of three bodies. Each of them is formed in annular shape and a heavier part is arranged for each 120deg. so as to lose valance. Then a permanent magnet 9 is arranged for each 90deg. on one side with a middle part of a 120deg. heavy arc-shape taken as a base point. The three bodies of the flywheel are rotated in a balance of 120deg. interval and, making use of an inertial moment caused by the lose of balance of the flywheel 3 by the use of a levitating force near agravity state due to repulsion of magnetic fluxes from the permanent magnets 8 and 9, accelerated to a critical speed by a starter 10 and rotated continuously. Thus, because the lose of unbalance of the variable flywheel weight is used for rotation, the efficiency of self- consuming energy becomes better.